HI,
The resistance of the VSadj pin using TMDS181 is 7.15K ohms.
Measuring Vswing at around 500mV,
When using a transfer board with a chip of TMDS181,
Found in the HDMI2.0 4K60Hz 444 signal,
500mV Vswing has an effect on the matching of its wires.
Change VSadj to 8.2K ohms,
Test Vswing at around 300mV, the effect will be better.
Seeing the parameters of the specification, VSadj vs VOD does not have data above 8K.
If so, is there a problem?
In addition, does the HDMI standard requirement be met after the change?
thanks.